html,
body {
  padding: 0;
  margin: 0;
  text-align: center;
}

a {
  text-decoration: none;
  -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
  -webkit-user-select: none;
  -moz-user-focus: none;
  -moz-user-select: none;
}


.div_1200 {
  width: 1200px;
  margin: auto;
}

.el-tabs__item.is-active {
  color: #f30022;
}

.el-tabs__item:hover {
  color: #f30022;
}

.el-tabs__active-bar {
  background-color: #f30022;
}

.a_art,
.a_art:visited {
  width: 200px;
  height: 40px;

  border: 1px solid #000;
  line-height: 40px;
  font-size: 17px;
  display: inline-block;
  cursor: pointer;
  margin: 0 10px 0 10px;
  color: #111
}

.a_art:hover,
.a_art.sel {
  color: #fff;
  border-color: #f30022;
  background-color: #f30022;

}


@media screen and (max-width:1200px) {
  .div_1200 {
    width: 100%;
  }

  .a_art,
  .a_art:visited {
    width: 17%;
    margin: 0 1%;

  }

}

@media screen and (max-width:700px) {
  .div_1200 {
    width: 100%;
  }

  .a_art,
  .a_art:visited {
    width: 30%;
    margin: 5px 1%;

  }

}
